Step ladder universal device



FIG. 1 is a back left isometric view of a step ladder universal device showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a right side view. 

CLAIM The ornamental design for a step ladder universal device, as shown. 